I am trying and failing to implement dynamic sorting. We have dynamic level hierarchical data and we want to sort only for last level.

I am tring to do that by:

        protected void OnInitializeBand(object sender, BandEventArgs e)
        {
            var control = sender as WebHierarchicalDataGrid;

            if (e.Band.Key == DataViewName)
            {
                var behaviors = e.Band.Behaviors;
                if (behaviors.Sorting == null )
                {
                    behaviors.CreateBehavior<Sorting>();
                }
            }
        }

While having auto AutoGeneratedBinds set to true and Ajax enabled. All looks nice but I am having error at:

$IG.SortingAction.prototype =
{
 get_value:function()
 {
  var sortedCols = $IG.SortingAction.callBaseMethod(this, 'get_value');
  var serverSortCols = [];
  for(var colIndex in sortedCols)
  {
   var col = sortedCols[colIndex];
   serverSortCols[serverSortCols.length] = {id:col.get_idPair(), sortDirection:this._object.getSortDirection(col)};
  }
  return serverSortCols;
 }
}

value of colIndex is "remove"

Do I initialize this sorting properly.

Thanks for answer